Ecii-ication



2 Sheets-Sheet '1.-

(No Model.)

J. L. 00X. I WEB CONTROLLING DEVICE FOR PRINTING MAGHINES. No. 347,690. Patented Aug. 17, 1886.

' WITNESSES INT BN1? Attorney M PEYERS. Pholo-Lilhugnphur. Washingmn. me.

(No Model.) 2-Sheets-Sheet 2'. J. L. COX.

WEB CONTROLLING DEVICE FOR PRINTING MACHINES.

Patented Aug. 17, 1886.

I IJV VEJV' TOR M m .dttorney #1 wmwun A A Q n d 5 r m WITNESSES UNITED STATES PATENT OFFICE.

JOSEPH L. COX, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO THE DUPLEX PRINTING PRESS COMPANY, OF SAME PLACE.

WEB-CONTROLLING DEVICE FOR PRINTING-MACHINES.

I SPECIFICATION forming part of Letters Patent No. 347,690, dated August 1'7, 1886.

Application filed December 9, 1985. Serial No. 185,161. (No model.)

To all whom it may concern:

Beitknown that I, JOSEPH -L. COX, of Battle Creek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in \Veb-C ontrolling Devices for Printing-lvla'ehines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form part of this'specification, in which .Figure 1 is a side view of my improved paper-feed governor, partly in section. Fig. 2 is a similar view of the governor in different position. ernor with the roll of paper removed.

The invention is a governor, for controlling the speed and regulating the tension of the web fed from a roll of paper to a printingpress; and it consists in the construction and novel arrangement of parts hereinafter described.

While the invention is particularly applicable to a printing-press,'it may be used to regulate the tension and control the speed of any fabric fed from a roll, as is done in calicoprinting and other arts.

In the accompanying drawings,l? designates the roll of paper on the shaft T,which is journaled in proper bearings formed on the frame of a printing-press.

c c are the rollers auxiliary to the feedrollers, (not shown,) between which the web passes after leaving the roll P. Th'e'said rollers c c are also j ournalcd in bearingsformed on the frame of the press. The feed-rollers proper are similar to those shown in my patent numbered 332,138,and dated December 8,1885,and need, therefore, no detailed description.

Gis arectangular frame journaled by means of the hooks K K upon the shaft T, and having the idler shaft or cylinder B journaled in the ends of its arms below the pivotal hooks K. The said hooks are bolted or otherwise secured to the side bars of the frame G, and are so bent as to fit upon the shaft T, so that the frame G turns on the same. The cylinder B is arranged to rest and ride upon the web .1 between the roll 1? andthe feed-rollers 0'0.

59 D is a ratchet-wheel secured to the shaft T Fig. 3 is a front view of the govoutside of the fra-meG and one of the bearings a of the shaft, and L is a friction-wheel on the shaft to the outer side of the ratchet-wheel D.

l m is a band of spring-steel having one end secured to a pin, 0, standing from a suitable part of the frame of the press. The band runs from the said pin nearly around the friction-wheel, closely hugging the same, and has its other end bearing upon apin, n, on an extension, N, of the pawl E, the pin F at the angle of which is journaled in a bearing formed on the frame of the press. The pawl is arranged to engage with the ratchet-wheel D, and is provided with an arm, H, which standsfrom the inner end of the pin F, adjacent to the side bar of the frame G.

I is a pin standing out from the said side bar in position to strike within the notch 2' near the end of the arm H when the cylinder B is lowered. When this action takes place, the extension N and pin a are turned outward, and the steel band m is consequently tightened on the friction-wheel L.

S is a spring-stop secured to the frame of the press at It, and arranged to prevent the outer arms of the frame G from being lifted too high. The give or yield of the spring also prevents jar when the upward motion of the frame is stopped.

The operation of the governor is as follows: The idle-cylinder B rests on the web of paper. As the latter passes from the roll to the auxiliary rolls 0 of the feed-rollers the weight of the cylinder B causes the lower end of frame G to descend until the pin I bears on the arm H and makes the band an bind on the frictionwheel L, when the roll stops its rotation; but the idler-cylinder will still continue to descend, and makes the slack of the web taut. The feed-rollers are then actuated by mechanism similar to that shown in my patent before referred to,in such manner that they then begin to turn rapidly and draw out the web. The

idler-cylinder is then drawn up, andallows the slack to feed out to the rollers. When it has ascended ashort distance,its weight causes the roll P to begin rotating and to feed to the rollers cc. All the while the idler-cylinder lies upon the slack of the web and keeps the saine taut. The rollers c c then stop rotating,

the proper amount of paper having been fed to the press,the idler-cylinder again descends, and the rotation of the roll is stopped by the action of the steel band at and friction-wheel, as before. The action of the idler-cylinder is such that while depressing the slack, rising with the same, and allowing the web to feed below it from the roll, the web is kept at a uniform tension, and the danger of breaking is brought to a minimum. \Vithout the governor very high rates of speed cannot be attained, nor can large rolls be used without constant danger of breaking the web, as a slack between the roll and feed-rollers will form. The ratchet-wheel and pawl will stop the rotation of the roll in case the steel band fails to act; but when the band and frictionwheel are in proper order the ratchet will rarely come into use.

Having described my invention, I claim- 1. The idler-cylinder journalcd in a frame journaled on the shaft of the paper roll, and arranged to rest upon the web of paper between the roll and the fcediug-rollers,substantially as specified.

2. The combination of the paper-roll shaft, the f ramo journaled thereomtheidler-cylinder journalcd in said frame, and the feeding-roll ers, substantially as specified.

3. The combination of the paper-roll shaft, the frame journalcd thereon, the friction-pulley secured thereto, the idler-cylinder journaled in the journaled frame, the steel band partially surrounding the friction-wheel, the feed-rollers, and means, substantially as described, whereby the descent of the idler-cylinder tightens the hold of the steel hand on the friction-wheel, substantially as specified.

4. The combination of the r01l-shal't, the ratchet wheel and friction wheel secured thereto, the frame journaled on the roll-shaft, the feed-rollers, the steel band partially surrounding the friction-wl1eel,and the pawl pivoted on the frame of the machine and adapted to engage the ratchet-wheel.

5. The combination of the shaftT,the frame G, journaled thereon, the idler-cylinder pivoted to the frame, the ratchet-wheel D and l'ric' tion-wheel L on the rollshal't, the feed-rollers c c, the steel band m, the pawl E, having the U 

